Melbourne: Almost five percent of the world's adult population (240 million people) have an alcohol use disorder and more than 20 percent (one billion people) smoke tobacco, new research on global addictive disorders has found.

The report estimates the number of people injecting drugs at around 15 million worldwide."Bringing all this data together has been very challenging but having this global snapshot in one accessible resource should prove invaluable for policymakers and researchers," said the report's lead author Linda Gowing, associate professor at University of Adelaide in South Australia.